theMind - world’s anonymous “hive" mind – crowdsourcing opinions
Quizzes for Pages - Quizzes for Pages is an application to create and share quizzes on your Facebook Page.
ThinkCool - Make better decisions
Outgrow - Enabling marketers boost conversion with interactive, beautiful & viral quizzes/calculators.
MEETplnr - Organize meetups in your chat groups with ease
Poll Everywhere - Audience response system that uses mobile phones, twitter, and the web. Responses are displayed in real-time on gorgeous charts in PowerPoint, Keynote, or web browser.